Do not pull optional dependencies

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-chrono.spec

@@ -7,13 +7,13 @@
 
 Name:           rust-%{crate}
 Version:        0.4.6
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Date and time library for Rust
 
 # Upstream license specification: MIT/Apache-2.0
 License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/chrono
-Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+Source:         %{crates_source}
 # Initial patched metadata
 # * Exclude CI files, https://github.com/chronotope/chrono/pull/283
 Patch0:         chrono-fix-metadata.diff
@@ -23,8 +23,6 @@ ExclusiveArch:  %{rust_arches}
 BuildRequires:  rust-packaging
 BuildRequires:  (crate(num-integer) >= 0.1.36 with crate(num-integer) < 0.2.0)
 BuildRequires:  (crate(num-traits) >= 0.2.0 with crate(num-traits) < 0.3.0)
-BuildRequires:  (crate(rustc-serialize/default) >= 0.3.20 with crate(rustc-serialize/default) < 0.4.0)
-BuildRequires:  (crate(serde/default) >= 1.0.0 with crate(serde/default) < 2.0.0)
 BuildRequires:  (crate(time/default) >= 0.1.39 with crate(time/default) < 0.2.0)
 %if %{with check}
 BuildRequires:  (crate(bincode/default) >= 0.8.0 with crate(bincode/default) < 0.9.0)
@@ -113,7 +111,7 @@ which use "time" feature of "%{crate}" crate.
 %ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
 %prep
-%autosetup -n %{crate}-%{version} -p1
+%autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
 
 %build
@@ -128,6 +126,9 @@ which use "time" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Mar 10 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.4.6-4
+- Do not pull optional dependencies
+
 * Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0.4.6-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild